Two charges of +4.0x10^-6 C and +8.0x10^-6C are placed 2.0m apart. What is the field strength halfway between them? = (9.0x10^9)(4.0x10^-6C) + (9.0x10^9)(8.0x10^-6C) (2m)^2 (2m)^2 This is what I have...which part is wrong?
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Originally Posted by johett Two charges of +4.0x10^-6 C and +8.0x10^-6C are placed 2.0m apart. What is the field strength halfway between them? = (9.0x10^9)(4.0x10^-6C) + (9.0x10^9)(8.0x10^-6C) (2m)^2 (2m)^2 This is what I have...which part is wrong? They are 2m apart, so the point midway between them is 1m from each, and where are the $\displaystyle 4 \pi \varepsilon_0$ terms? RonL
Originally Posted by johett Two charges of +4.0x10^-6 C and +8.0x10^-6C are placed 2.0m apart. What is the field strength halfway between them? = (9.0x10^9)(4.0x10^-6C) + (9.0x10^9)(8.0x10^-6C) (2m)^2 (2m)^2 This is what I have...which part is wrong? and the two terms are in opposite directions so one of them should have a "-" sign in front of it. RonL
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